1871.] . 105 
scribed by authors as Feronia, Argutor, &c., belong to the genus, such 
as Ff. postica and irina (Brullé Voy. de D’Orbigny), / confusa (De). 
Sp.), and others. 
The following species appear to be as yet undescribed :— 
LOXANDRUS SULCATUS, n. sp.—Hlongato-ellipticus, nigerrimus, thorace 
elytrisque leete iridescentibus, antennis, palpis, tarsisque rufo-piceis ; thorace 
sub-quadrato, elytris multo angustiori, ante medium paululum rotundato- 
dilatato, angulis posticis obtusis sed distinctis, supra lined dorsali fortiter 
umpresso, basi punctato utrinque foved elongata profundd signato: elytris 
punctulato-sulcatis ; subtus sternis omnibus abdominisque basi punctatis. 
Long. 53 lin. 8 &. 
Of more slender form than Pecilus cupreus (Auct.), with narrower 
and longer thorax; which is very gradually and slightly narrowed pos- 
teriorly, with obtuse hind angies. Colour a deep glossy black, with 
strong iridescent gloss on the thorax as well as on the elytra. The 
latter are sharply sulcated with a neat row of punctures in the bottom 
of the sulci. 
Ega; under rotting leaves in the forest. 
LoXANDRUS POLITISSIMUS, n. sp.—-Hlongato-ellipticus, niger nitidissi- 
mus, supra splendidé iridescens ; antennarum articulis duobus basalibus, 
palpis, labro, tarsisque rujis ; thorace elytris multo angustiori, medio rotun- 
dato-dilatato, postice sinuato-angustato, angulis posticis prominulis, supra 
basi sparsim punctato utrinque foved elongata profunda impresso ; elytris 
fortiter striatis, striarum fundis punctulatis ; subtus sternis omnibus abdoms- 
nisque basi punctatis. Long. 44 lin. |. 
A species remarkable for the intensity of its gloss and iridescence. 
It is further distinguished from the three following, which it much 
resembles, by the base of the thorax being punctured up to the hind 
angles. The thorax is considerably narrowed behind, and sinuate 
near the posterior angles, which are prominent and acute at the tip. 
Ega. 
LoXANDRUS LEVICOLLIS, n. sp.— Hlongato-ellipticus, nigerrimus, politus, 
elytris sub-iridescentibus, palpis tarsisque fulvis, antennis ad basin piceo-rufis ; 
thorace sub-quadrato, elytris angustiort, lateribus paululum rotundatis, postice 
gradatim leviter angustato, angulis posticis sub-rectis, haud prominulis, supra 
totidem impunctato, basi utrinque fovea elongata impresso ;' elytris punctato- 
striatis ; subtis mesosterni episternis antice punctulatis, Long. 44 lin. g. 
The thorax is nearly square, the sides being very slightly rounded, 
and the base quite free from punctures. 
Rio Janeiro. 
